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spinlock: try and acquire func

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Matheus
2022-09-09 18:14:14 -03:00
parent b8c3a7aebc
commit 417c46c040
1 changed files with 6 additions and 0 deletions
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src/arch/x86_64/include/arch/spinlock.h
+6
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@@ -1,10 +1,16 @@
#ifndef _SPINLOCK_H_INCLUDE #ifndef _SPINLOCK_H_INCLUDE
#define _SPINLOCK_H_INCLUDE #define _SPINLOCK_H_INCLUDE
#include <stdbool.h>
static inline void spinlock_acquire(int *lock){ static inline void spinlock_acquire(int *lock){
while(!__sync_bool_compare_and_swap(lock, 0, 1)) asm("pause"); while(!__sync_bool_compare_and_swap(lock, 0, 1)) asm("pause");
} }
static inline bool spinlock_trytoacquire(int *lock){
return __sync_bool_compare_and_swap(lock, 0, 1);
}
static inline void spinlock_release(int *lock){ static inline void spinlock_release(int *lock){
*lock = 0; *lock = 0;
} }